In this situation, are you obliged to adopt a cautious approach?

In the situation shown, pedestrians, including a child, are moving correctly on the pavement and are supervised by an adult, showing no intention of entering the roadway. According to Art. 4 of the Road Traffic Act, you have the right to assume that other road users comply with regulations as long as their behaviour does not indicate otherwise. Since there is no obvious threat of the pedestrians violating the rules, the principle of limited trust is not mandatory at this moment, although caution should always be exercised.